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Aleksandrovsky, A. S.
Nonlinear optical processes and DUV generation in random domain structures of SBO / A. S. Aleksandrovsky // Conference on Lasers and Electro-Optics Europe - Technical Digest / Conference on Lasers and Electro-Optics (2015 ; May ; 10-15 ; San Jose, California, US) : IEEE, 2015. - Cited References:3 . - ISBN 2160-9020

РУБ Engineering, Electrical & Electronic + Optics + Physics, Applied
Рубрики:
CRYSTAL
Аннотация: Random domain structures in orthorhombic strontium tetraborate (alpha-SBO) are capable in enhancing nonlinear optical conversion efficiency for large variety of processes throughout all transparency window of this material, down to 121 nm. Properties of the material, origin of domains, frequency doubling and autocorrelation measurements, conversion of supercontinuum to UV and continuously tunable VUV generation are described. Prospects of biphoton field generation in alpha-SBO are discussed.

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Доп.точки доступа:
Александровский, Александр Сергеевич; Conference on Lasers and Electro-Optics(2015 ; May ; 10-15 ; San Jose, California, US)
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Aleksandrovsky, A. S.
Nonlinear optical processes and DUV generation in random domain structures of SBO / A. S. Aleksandrovsky // Conference on Lasers and Electro-Optics Europe - Technical Digest / Conference on Lasers and Electro-Optics (2015 ; may ; 10–15 ; San Jose, California, US) : IEEE-Institute Electrical and Electronics Engineers, 2015. - Vol. 2015-August. - Ст. 7184028, DOI 10.1364/CLEO_SI.2015.STh3H.1. - Cited References: 3 . - ISBN 9781557529688 (ISBN)

РУБ Engineering, Electrical & Electronic + Optics + Physics, Applied
Рубрики:
CRYSTAL
Кл.слова (ненормированные):
Correlation -- Nonlinear optics -- Optical diffraction -- Optical frequency conversion -- Optical harmonic generation -- Ultrafast optics
Аннотация: Random domain structures in orthorhombic strontium tetraborate (α-SBO) are capable in enhancing nonlinear optical conversion efficiency for large variety of processes throughout all transparency window of this material, down to 121 nm. Properties of the material, origin of domains, frequency doubling and autocorrelation measurements, conversion of supercontinuum to UV and continuously tunable VUV generation are described. Prospects of biphoton field generation in α-SBO are discussed. © 2015 OSA.

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Доп.точки доступа:
Александровский, Александр Сергеевич; Conference on Lasers and Electro-Optics(2015 ; May ; 10-15 ; San Jose, California, US)
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Antiferromagnetic Resonance and Dielectric Properties of Rare-earth Ferroborates in the Submillimeter Frequency Range / A. M. Kuz'menko [et al.] // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 1. - P. 113-120, DOI 10.1134/S106377611105013X. - Cited References: 27. - This work was supported by the Russian Foundation for Basic Research, project no. 10-02-00846. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
GDFE3(BO3)(4)
SPECTROSCOPY
CRYSTAL
Кл.слова (ненормированные):
Antiferromagnetic resonance -- Basic parameters -- Effective anisotropy constant -- Ferroborates -- Ferroics -- Ferromagnetic orderings -- Frequency ranges -- Magnetic interactions -- Magnetoresonance -- Millimeter frequency range -- Rare earth ions -- Submillimeters -- Antiferromagnetic materials -- Crystallography -- Erbium -- Europium -- Ferromagnetic resonance -- Ion exchange -- Magnetic anisotropy -- Magnetic devices -- Magnetic structure -- Permittivity -- Resonance -- Antiferromagnetism
Аннотация: The magnetoresonance and dielectric properties of a number of crystals of a new family of multiferroics, namely, rare-earth ferroborates RFe(3)(BO(3))(4) (R = Y, Eu, Pr, Tb, Tb(0.25)Er(0.75)), are studied in the submillimeter frequency range (nu = 3-20 cm(-1)). Ferroborates with R = Y, Tb, and Eu exhibit permittivity jumps at temperatures of 375, 198, and 58 K, respectively, which are caused by the R32 -> P3(1)2(1) phase transition. Antiferromagnetic resonance (AFMR) modes in the subsystem of Fe(3+) ions are detected in the range of antiferromagnetic ordering (T < T(N) = 30-40 K) in all ferroborates that have either an easy-plane (Y, Eu) or easy-axis (Pr, Tb, Tb(0.25)Er(0.75)) magnetic structure. The AFMR frequencies are found to depend strongly on the magnetic anisotropy of a rare-earth ion and its exchange interaction with the Fe subsystem, which determine the type of magnetic structure and the sign and magnitude of an effective anisotropy constant. The basic parameters of the magnetic interactions in these ferroborates are found, and the magnetoelectric contribution to AFMR is analyzed.

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Держатели документа:
[Kuz'menko, A. M.
Mukhin, A. A.
Ivanov, V. Yu.
Lebedev, S. P.] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
[Kadomtseva, A. M.] Moscow MV Lomonosov State Univ, Moscow 119991, Russia
[Bezmaternykh, L. N.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russian Federation
Moscow State University, Moscow, 119991, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kuz'menko, A. M.; Mukhin, A. A.; Ivanov, V. Y.; Kadomtseva, A. M.; Lebedev, S. P.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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    Bismuth activated full spectral double perovskite luminescence materials by excitation and valence control for future intelligent LED lighting / Y. Wei, H. Yang, Z. Y. Gao [et al.] // Chem. Commun. - 2020. - Vol. 56, Is. 64. - P. 9170-9173, DOI 10.1039/d0cc03975f. - Cited References: 27. - This work was supported by the National Natural Science Foundation of China (Grant No. 51672259) and the Fundamental Research Funds for the National Universities, China University of Geosciences (Wuhan) (No. 1910491T02) . - ISSN 1359-7345. - ISSN 1364-548X
   Перевод заглавия: Активированные висмутом люминесцентные материалы двойных перовскитов, с полным спектром излучения, который получается за счет управления возбуждением и валентностью, для интеллектуального светодиодного освещения в будущем

РУБ Chemistry, Multidisciplinary
Рубрики:
PHOTOLUMINESCENCE
   PHOSPHORS
   Bi3+
   MODULATION
   CRYSTAL
Аннотация: A novel La2Mg1.14Zr0.86O6:Bi3+ double perovskite phosphor with excitation-induced blue/green photoluminescence tuning is reported. By designing Bi3+ → Eu3+ energy transfer, single-composition white light with wide-scale adjustable corrected color temperatures (CCTs) is successfully achieved. This work initiates a new insight to explore phosphors with excitation-induced photoluminescence tuning and wide CCT control for future intelligent LED lighting.

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Держатели документа:
China Univ Geosci, Engn Res Ctr Nanogeomat, Minist Educ, Fac Mat Sci & Chem, Wuhan 430074, Hubei, Peoples R China.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.

Доп.точки доступа:
Wei, Y.i.; Yang, Hang; Gao, Zhiyu; Xing, Gongcheng; Molokeev, M. S.; Молокеев, Максим Сергеевич; Li, Guogang
}
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    Chemistry of vinylidene complexes. XVIII. Synthesis and molecular structure of the novel trinuclear mu(3)-vinylidene complex CpReFePt(mu(3)-C=CHPh)(CO)(6)(PPh(3)) / A. B. Antonova [et al.] // J. Organomet. Chem. - 2009. - Vol. 694, Is. 1. - P. 127-130, DOI 10.1016/j.jorganchem.2008.08.037. - Cited Reference Count: 17. - Гранты: This work was supported by the Council of the Russian Federation President for Support of Young Scientists and Leading Scientific Schools (Project No. NSch-4137.2006.2) and the Krasnoyarsk Regional Science Foundation (Grants 10TS145 and 17G002). - Финансирующая организация: Council of the Russian Federation President for Support of Young Scientists and Leading Scientific Schools [NSch-4137.2006.2]; Krasnoyarsk Regional Science Foundation [10TS145, 17G002] . - ISSN 0022-328X
Рубрики:
CLUSTERS
   CRYSTAL
   MNFEPT
Кл.слова (ненормированные):
Vinylidene complexes -- Heterometallic clusters -- Rhenium -- Iron -- Platinum -- Crystal structure -- Crystal structure -- Heterometallic clusters -- Iron -- Platinum -- Rhenium -- Vinylidene complexes -- Atomic physics -- Atoms -- Bond length -- Chemical bonds -- Coordination reactions -- Crystal structure -- Iron compounds -- Nuclear magnetic resonance -- Nuclear magnetic resonance spectroscopy -- Platinum -- Quantum chemistry -- Rhenium -- Rhenium compounds -- Bond angles -- Co groups -- Double bonds -- Fe atoms -- Heterometallic -- Heterometallic clusters -- Pt atoms -- Trimetallic -- Vinylidene complexes -- X-ray diffractions -- Platinum compounds
Аннотация: The interaction between Cp(CO)(2)RePt(mu-C=CHPh)(PPh(3))(2) (1) and Fe(2)(CO)(9) afforded the new heterometallic mu(3)-vinylidene cluster CpReFePt(mu(3)-C=CHPh)(CO)(6)(PPh(3)) (2). An X-ray diffraction study shows the complex 2 possesses a trimetallic Re-Fe-Pt chain core. The bond lengths are Re-Fe 2.8221(8), Fe-Pt 2.5813(8) angstrom; the Re center dot center dot center dot Pt distance is 3.3523(7) angstrom; the bond angle Re-Fe-Pt is 76.55(3)degrees. The mu(3)-C=CHPh ligand is eta(1)-bound to the Re and Pt atoms and eta(2)-coordinated to the Fe atom. The C=C bond length is 1.412(4) angstrom. The Pt atom is coordinated by the PPh(3) and CO groups. Complex 2 is characterized by the IR and (1)H, (13)C and (31)P NMR spectra. (C) 2008 Elsevier B.V. All rights reserved.

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Держатели документа:
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660049, Russia
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 119991, Russia

Доп.точки доступа:
Antonova, A.B.; Chudin, O.S.; Pavlenko, N.I.; Sokolenko, W.A.; Rubaylo, A.I.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Semeikin, O.V.
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Correlation of the magnetic and transport properties with polymorphic transitions in bismuth pyrostannate Bi2(Sn1 − xCr x)2O7 / S. S. Aplesnin [et al.] // Phys. Solid State. - 2015. - Vol. 57, Is. 8. - P. 1627-1632, DOI 10.1134/S1063783415080028. - Cited References: 17. - This study was supported by the Russian Foundation for Basic Research (project no. 15-02-01445-a) and the Ministry of Education and Science of the Russian Federation (state task no. 114090470016). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
GAS SENSORS
Bi2Sn2O7
CRYSTAL
Аннотация: The correlation of the electrical, magnetic, and structural properties of Bi2(Sn1 − xCrx)2O7 solid solutions has been investigated for two compositions with x = 0.05 and 0.1. The temperatures of structural phase transitions and anomalies of the electrical resistance in the vicinity of these transitions at temperatures in the range 300 K ˂ T ˂ 1000 K have been determined using differential scanning calorimetry. It has been found that the thermoelectric power changes sign upon the polymorphic transition. The paramagnetic Curie temperature and the chromium-ion spin have been found from the temperature dependence of the magnetic susceptibility in the range 4 K ˂ T ˂ 1000 K and from the field dependence of the magnetic moment in magnetic fields of up to 6 T.

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Публикация на русском языке Корреляция магнитных и транспортных свойств с полиморфными переходами в пиростаннате висмута Bi2(Sn1-xCrx)2O7 [Текст] / С. С. Аплеснин [и др.] // Физ. тверд. тела. - 2015. - Т. 57 Вып. 8. - С. 1590-1595

Держатели документа:
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50-38, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, pr. imeni Gazety “Krasnoyarskii Rabochii” 31, Krasnoyarsk, Russian Federation
Far Eastern State Transport University, ul. Serysheva 47, Khabarovsk, Russian Federation
Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, Russian Federation
Scientific-Practical Materials Research Centre, National Academy of Sciences of Belarus, ul. P. Brovki 19, Minsk, Belarus

Доп.точки доступа:
Аплеснин, Сергей Степанович; Aplesnin, S. S.; Udod, L. V.; Удод, Любовь Викторовна; Sitnikov, M. N.; Eremin, E. V.; Еремин, Евгений Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Tarasova, L. S.; Yanushkevich, K. I.; Galyas, A. I.; Russian Foundation for Basic Research [15-02-01445-a]; Ministry of Education and Science of the Russian Federation [114090470016]
}
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Deep UV generation and fs pulses characterization using strontium tetraborate / A. S. Aleksandrovsky [et al.] ; ed. V. V. Slabko // Proc. of SPIE. - 2011. - Vol. 8071. - Ст. 80710K, DOI 10.1117/12.886189. - Cited References: 12 . - ISSN 0277-786X. - ISSN 978-0-819

РУБ Optics
Рубрики:
CRYSTAL
Кл.слова (ненормированные):
nonlinear photonic crystal -- strontium tetraborate -- second harmonic generation -- random quasi phase matching -- ultrafast diagnostics
Аннотация: The properties of NPC structures in strontium tetraborate are analyzed. Different types of NPC structures are revealed that possess different nonlinear properties, and their spectral dependences of frequency conversion efficiency are calculated and compared. Experimental study of these structures is reported for the process of doubling of the second harmonic of fs Ti:S laser. Tuning of generated radiation is obtained in the range 187.5 - 232.5 nm, with extreme insensitivity to the angular orientation of NPC. Behavior of tuning curve along investigated fundamental wave range is similar in all studied samples, but efficiency obtained depends on the type of structure. Conversion efficiency and spectral quality of generated radiation is experimentally shown to grow better when using NPC with improved structure. Prospects of VUV converter on a single NPC are discussed. NPCs of SBO are demonstrated to be useful for autocorrelation diagnostics both in random QPM geometry and in the geometry of nonlinear diffraction from virtual beam.

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Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Ikonnikov, A. A.; Pospelov, G. I.; Slabko, V. V.; Слабко, Виталий Васильевич; Zhokhova, A. A.; Slabko, V. V. \ed.\; Nonlinear Optics and Applications (5 ; 2011 ; Apr. ; 19-21 ; Prague, Czech Republic)
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Demidov, A. A.
Magnetic phase transitions in Nd1−xDyxFe3(BO3)4 ferroborates / A. A. Demidov, I. A. Gudim, E. V. Eremin // J. Exp. Theor. Phys. - 2012. - Vol. 114, Is. 2. - P. 259-272, DOI 10.1134/S1063776111160023. - Cited References: 29. - This study was supported financially by the President of the Russian Federation (grant no. MK-497.2010.2). . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
SPIN REORIENTATION
   CRYSTAL
   DY
   ND
Аннотация: The magnetic properties of ferroborate single crystals with substituted compositions Nd1−xDyxFe3(BO3)4 (x = 0.15, 0.25) with competing exchange Nd-Fe and Dy-Fe interactions are investigated. For each composition, we observed a spontaneous spin-reorientation transition from the easy-axis to the easy-plane state and step anomalies on the magnetization curves for the spin-flop transition induced by a magnetic field B | c. The measured parameters and effects are interpreted using a unified theoretical approach based on the molecular field approximation and on calculations performed in the crystal-field model for the rare-earth ion. The experimental temperature dependences of the initial magnetic susceptibility from T = 2 K to T = 300 K, anomalies on the magnetization curves for B | c in fields up to 1.8 T, and their evolution with temperature, as well as temperature and field dependences of magnetization in fields up to 9 T are described. In the interpretation of experimental data, the crystal-field parameters in trigonal symmetry for the rare-earth subsystem are determined, as well as the parameters of Nd-Fe and Dy-Fe exchange interactions.

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Публикация на русском языке Демидов, А. А. Магнитные фазовые переходы в ферроборатах Nd1-xDyxFe3(BO3)4 / А. А. Демидов // Журнал экспериментальной и теоретической физики : Издательство "Наука", 2012. - Т. 141, N 2. - С. 294-309. - ISSN 0044-4510

Держатели документа:
[Demidov, A. A.] Bryansk State Tech Univ, Bryansk 241035, Russia
[Gudim, I. A.
Eremin, E. V.] Russian Acad Sci, Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660038, Russia

Доп.точки доступа:
Gudim, I. A.; Гудим, Ирина Анатольевна; Eremin, E. V.; Еремин, Евгений Владимирович; Демидов А. А.
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Electrical properties of the polycrystalline BiFe0.95Co0.05O3 films / O. B. Romanova, V. V. Kretinin, S. S. Aplesnin [et al.] // Phys. Solid State. - 2021. - Vol. 63. Is. 6. - P. 897-903, DOI 10.1134/S1063783421060184. - Cited References: 34. - This study was supported by the Russian Foundation for Basic Research and the Belarusian Republican Foundation for Basic Research, project no. 20-52-00005 . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
BiFeO3 THIN-FILMS
   PHASE-SEPARATION
   CRYSTAL
   MODEL
Кл.слова (ненормированные):
semiconductor films -- magnetoresistance -- magnetoimpedance -- magnetization
Аннотация: Semiconductor BiFe0.95Co0.05O3 thin-film compounds have been synthesized by a burst technique. The film surface morphology and the effect of electronic doping via substitution of cobalt ions for trivalent iron on the optical, magnetic, and kinetic properties have been investigated in the temperature range of 77-600 K in magnetic fields of up to 12 kOe. Two electron relaxation channels have been found in the impedance spectrum in the frequency range of 0.1-1000 kHz. The negative magnetoresistance in the anomalous magnetization region and the maximum magnetoimpedance in the vicinity of the surface phase transition have been established. Using the Hall measurements, carrier types dominating in the magnetoresistance and magnetoimpedance effects have been determined. The magnetization anomalies have been explained in the model of superparamagnetic clusters and the magnetoresistance, by the carrier scattering by spin fluctuations.

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Публикация на русском языке Электрофизические свойства поликристаллических пленок BiFe0.95Co0.05O3 [Текст] / О. Б. Романова, В. В. Кретинин, С. С. Аплеснин [и др.] // Физ. тверд. тела. - 2021. - Т. 63 Вып. 6. - С. 721-728

Держатели документа:
Russian Acad Sci, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia.
Natl Acad Sci Belarus, Sci & Pract Mat Res Ctr, Minsk 220072, BELARUS.

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Kretinin, V. V.; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Udod, L. V.; Удод, Любовь Викторовна; Yanushkevich, K. I.; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Belarusian Republican Foundation for Basic Research [20-52-00005]
}
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10.

    Enhanced cyan emission and optical tuning of Ca3Ga4O9:Bi3+ for high-quality full-spectrum white light-emitting diodes / D. J. Liu, X. H. Yun, G. G. Li [et al.] // Adv. Opt. Mater. - 2020. - Vol. 8, Is. 22. - Ст. 2001037, DOI 10.1002/adom.202001037. - Cited References: 55. - This work was financially supported by the National Natural Science Foundation of China (NSFC No. 51932009, 51720105015, 51672265, 51672266, 51672257 and 51672259), the Key Research Program of Frontier Sciences, CAS (Grant No. YZDY-SSW-JSC018), Science and Technology Cooperation Project between Chinese and Australian Governments (2017YFE0132300), the Jiangmen Innovative Research Team Program (2017), and the Major Program of Basic Research and Applied Research of Guangdong Province (2017KZDXM083) . - ISSN 2195-1071
   Перевод заглавия: Улучшенное голубое излучение и оптическая настройка Ca3Ga4O9:Bi3+ для получения высококачественных белых светодиодов полного спектра

РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
ENERGY-TRANSFER
   TUNABLE LUMINESCENCE
   PHOSPHOR
   CRYSTAL
   MODULATION
Кл.слова (ненормированные):
cyan-emitting phosphors -- full-spectrum white lighting -- optical tuning -- single-phased white light-emitting diodes
Аннотация: Highly efficient cyan‐emitting phosphor materials are indispensable for closing the cyan gap in spectra of the traditional phosphor‐converted white light‐emitting diodes (WLEDs) to achieve high‐quality full‐spectrum white lighting. In this work, bright cyan‐emitting Ca3Ga4O9 (CGO):0.02Bi3+,0.07Zn2+ phosphor is developed to bridge the cyan gap. Such a Bi3+,Zn2+ codoping enhances the cyan emission of CGO:0.02Bi3+ by 4.1 times due to the influence of morphology and size of phosphor particles, charge compensation and lattice distortion. Interestingly, codoping La3+ ions into the current system can achieve a photoluminescence tuning of CGO:0.02Bi3+ from cyan to yellowish‐green by crystallographic site engineering. Besides, Bi3+–Eu3+ energy transfer is successfully realized in CGO:0.02Bi3+,0.07Zn2+,nEu3+ phosphors and the emission color tuning from cyan to orange is observed. The investigation of thermal quenching behaviors reveals that the incorporation of Zn2+ and La3+ improves the thermal stability of CGO:0.02Bi3+. Finally, CGO:0.02Bi3+,0.07Zn2+,0.10Eu3+ phosphor is employed to obtain a single‐phased warm WLED device. A full‐spectrum WLED device with remarkable color rendering index (Ra) of 97.4 and high luminous efficiency of 69.72 lm W−1 is generated by utilizing CGO:0.02Bi3+,0.07Zn2+ phosphor. This result suggests the important effect of CGO:0.02Bi3+,0.07Zn2+ phosphor on closing the cyan gap, providing new insights of cyan‐emitting phosphors applied in full‐spectrum white lighting.

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Держатели документа:
Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China.
Univ Sci & Technol China, Sch Appl Chem & Engn, Hefei 230026, Peoples R China.
China Univ Geosci, Fac Mat Sci & Chem, Engn Res Ctr Nanogeomat, Minist Educ, Wuhan 430074, Peoples R China.
RAS, SB, Lab Crystal Phys, Kirensky Inst Phys,Fed Res Ctr,KSC, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Engn Phys & Radioelect, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Shandong Univ, Sch Mat Sci & Engn, Jinan 266071, Peoples R China.
Wuyi Univ, Sch Appl Phys & Mat, Jiangmen 529020, Guangdong, Peoples R China.

Доп.точки доступа:
Liu, Dongjie; Yun, Xiaohan; Li, Guogang; Dang, Peipei; Molokeev, M. S.; Молокеев, Максим Сергеевич; Lian, Hongzhou; Shang, Mengmeng; Lin, Jun
}
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11.

Ferroelastic phase transition in Cs3Bi2I9: A neutron diffraction study / A. . Jorio [et al.] // Phys. Rev. B. - 2000. - Vol. 61, Is. 6. - P. 3857-3862, DOI 10.1103/PhysRevB.61.3857. - Cited References: 16 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
CRYSTAL
SCATTERING
CS3SB2I9
Аннотация: Crystalline Cs3Bi2I9, With the P6(3)/mmc symmetry at room temperature was studied by Laue and four-circle neutron diffractometry from room temperature down to 50 K. At T-0 = 220 K the crystal undergoes a second-order proper ferroelastic phase transition to a polydomain structure with a nonprimitive monoclinic C12/m1 space group. Satellites were not found below T-0, indicating that the continuous distribution of sites observed in previous I-127 nuclear quadrupole resonance experiments is due either to an undetected incommensurate phase characterized by a very small displacement amplitude, or due to the fraction of the crystal volume occupied by domain walls. We argue that thick domain walls are expected in the present structure due to the absence of mechanical compatibility between domains.

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Держатели документа:
Univ Fed Minas Gerais, Dept Fis, BR-30123970 Belo Horizonte, MG, Brazil
Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Ecole Cent Paris, LSPMM, CNRS, UMR 8580, F-92295 Chatenay Malabry, France
CENS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France
Univ Toulon & Var, LMMI, F-83957 La Garde, France
ИФ СО РАН

Доп.точки доступа:
Jorio, A.; Currat, R.; Myles, DAA; McIntyre, G. J.; Aleksandrova, I. P.; Александрова, Инга Петровна; Kiat, J. M.; Saint-Gregoire, P.
}
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12.

Generation of coherent radiation in the vacuum ultraviolet using randomly quasi-phase-matched strontium tetraborate / P. Trabs [et al.] // Opt. Lett. - 2016. - Vol. 41, Is. 3. - P. 618-621, DOI 10.1364/OL.41.000618. - Cited References:15 . - ISSN 0146-9592. - ISSN 1539-4794

РУБ Optics
Рубрики:
Crystal
SrB4O7
nm
Аннотация: Tunable coherent radiation is generated in the vacuum ultraviolet down to 121 nm using random quasi-phase matching in strontium tetraborate, the shortest wavelength ever produced with a second-order nonlinear optical process in a solid-state material. Relevant properties of this radiation, the nonlinear process, and the nonlinear crystal are investigated.

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Держатели документа:
Max Born Inst Nonlinear Opt & Ultrafast Spect, 2A Max Born Str, D-12489 Berlin, Germany.
LV Kirenskii Inst Phys, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Trabs, Peter; Noack, Frank; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Petrov, Valentin
}
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13.

Generation of coherent vacuum UV radiation in randomly quasi-phase-matched strontium tetraborate / P. Trabs [et al.] // CLEO-SI : Optical Society of America, 2015. - P. 2267, DOI 10.1364/CLEO_SI.2015.STh3H.2. - Cited References:6 . - ISBN 9781557529688 (ISBN). - ISBN 2160-9020

РУБ Engineering, Electrical & Electronic + Optics + Physics, Applied
Рубрики:
CRYSTAL
NM
Аннотация: Tunable coherent radiation is generated in the VUV down to 121 nm using random quasi-phase-matching in strontium tetraborate, the shortest wavelength ever produced with a second-order nonlinear optical process in a solid-state material. © 2015 Optical Society of America.

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Доп.точки доступа:
Trabs, P.; Noack, F.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Petrov, V.; Conference on Lasers and Electro-Optics(2015 ; May ; 10-15 ; San Jose, California, US)
}
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14.

Generation of coherent vacuum UV radiation in randomly quasi-phase-matched strontium tetraborate / P. Trabs [et al.] // Conference on Lasers and electro-optics (CLEO) : IEEE, 2015. - Cited References:6 . - ISBN 2160-9020

РУБ Engineering, Electrical & Electronic + Optics + Physics, Applied
Рубрики:
CRYSTAL
NM
Аннотация: Tunable coherent radiation is generated in the VUV down to 121 nm using random quasi-phase-matching in strontium tetraborate, the shortest wavelength ever produced with a second-order nonlinear optical process in a solid-state material. (C) 2015 Optical Society of America

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Доп.точки доступа:
Trabs, Peter; Noack, Frank; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Petrov, Valentin
}
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15.

Identification of ε-Fe2O3 nano-phase in borate glasses doped with Fe and Gd / O. S. Ivanova [et al.] // J. Magn. Magn. Mater. - 2016. - Vol. 401. - P. 880-889, DOI 10.1016/j.jmmm.2015.10.126. - Cited References: 40. - This work was supported partly by the Russian Foundation for Basic Research, Grants No 14-02-01211-a and by the President of Russia Grant No. NSh-2886.2014.2. Authors are grateful to G.A. Bukhtiyarova and U.N. Martyanov for the assistance in the ε-Fe2O3 nanoparticles prepared by a wet chemical pore filling impregnation method and for the discussion of the obtained results . - ISSN 0304-8853

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
MAGNETIC-PROPERTIES
   IRON-OXIDE
   NANOPARTICLES
   CERAMICS
   CRYSTAL
   PARTICLES
   SURFACE
Кл.слова (ненормированные):
Magnetic nanoparticles -- ε-Fe2O3 -- Magnetic circular dichroism -- Electron magnetic resonance
Аннотация: A new type of magnetic nanoparticles was revealed in borate glasses co-doped with low contents of iron and gadolinium. Structure and magnetic properties of the particles differ essentially from that of the α-Fe2O3, γ-Fe2O3, or Fe3O4 nanoparticles which were detected earlier in similar glass matrices. Transmission electron microscopy including STEM-HAADF and EDX, synchrotron radiation-based XRD, static magnetic measurements, magnetic circular dichroism, and electron magnetic resonance studies allow referring the nanoparticles to the iron oxide phase-ε-Fe2O3. Analysis of the data set has shown that it is Gd atoms that govern the process of nanoparticles' nucleation and its incorporation into the particles in different proportions can be used to adjust their magnetic and magneto-optical characteristics. © 2015 Elsevier B.V.

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Держатели документа:
L.V. Kirensky Institute of Physics, Siberian Branch of RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
NRC Kurchatov Institute, Moscow, Russian Federation
Boreskov Institute of Catalysis, Siberian Branch of RAS, Novosibirsk, Russian Federation
Novosibirsk State University, Novosibirsk, Russian Federation
Vavilov State Optical Institute, All-Russia Research Center, Petersburg, Russian Federation

Доп.точки доступа:
Ivanova, O. S.; Иванова, Оксана Станиславовна; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Edelman, I. S.; Эдельман, Ирина Самсоновна; Petrakovskaja, E. A.; Петраковская, Элеонора Анатольевна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Zubavichus, Y. V.; Zaikovskii, V .I.; Stepanov, S. A.
}
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16.

    Intrinsic isotropic near-zero thermal expansion in Zn4B6O12X (X = O, S, Se) / Y. Q. Liu, D. J. Mei, N. Z. Wang [et al.] // ACS Appl. Mater. Interfaces. - 2020. - Vol. 12, Is. 34. - P. 38435-38440, DOI 10.1021/acsami.0c12351. - Cited References: 43. - This work was supported by the National Scientific Foundations of China (Grants 51872297, 51702330, 11974360, 51972208, 51890864, and 51802321), Russian Foundation for Basic Research (Grant 17-52-53031), and Fujian Institute of Innovation (FJCXY18010201) in CAS. X.J. acknowledges the support from the Youth Innovation Promotion Association in CAS (Grant 2017035) and Youth Talent Promotion Project from China Association for Science and Technology . - ISSN 1944-8244. - ISSN 1944-8252
   Перевод заглавия: Близкое к нулю изотропное тепловое расширение в Zn4B6O12X (X = O, S, Se)

РУБ Nanoscience & Nanotechnology + Materials Science, Multidisciplinary
Рубрики:
CRYSTAL
Кл.слова (ненормированные):
intrinsic isotropic zero thermal expansion -- phonon mode -- first-principals vibration analysis -- borate -- sodalite cage structure
Аннотация: Zero thermal expansion (ZTE) materials, keeping size constant as temperature varies, are valuable for resisting the deterioration of the performance from environmental temperature fluctuation, but they are rarely discovered due to the counterintuitive temperature-size effect. Herein, we demonstrate that a family of borates with sodalite cage structure, Zn4B6O12X (X = O, S, Se), exhibits intrinsic isotropic near-ZTE behaviors from 5 to 300 K. The very low thermal expansion is mainly owing to the coupling rotation of [BO4] rigid groups constrained by the bonds between Zn and cage-edged O atoms, while the central atoms in the cage have a negligible contribution. Our study has significant implications on the understanding of the ZTE mechanism and exploration of new ZTE materials.

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Держатели документа:
Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China.
Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
Shanghai Univ Engn Sci, Coll Chem & Chem Engn, Shanghai 201620, Peoples R China.
Fed Res Ctr KSC SB RAS, Lab Crystal Phys, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Liu, Youquan; Mei, Dajiang; Wang, Naizheng; Molokeev, M. S.; Молокеев, Максим Сергеевич; Jiang, Xingxing; Lin, Zheshuai
}
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17.

Investigation of the influence of gradual substitution K a dagger" Rb on the structure and phase transition in K (x) Rb1-x Pb2Br5 solid solutions / L. I. Isaenko [et al.] // Phys. Solid State. - 2009. - Vol. 51, Is. 3. - P. 589-592, DOI 10.1134/S1063783409030251. - Cited References: 5. - This study was supported by the Council on Grants from the President of the Russian Federation for the Support of Leading Scientific Schools ( grant no. NSh-1011.2008.2). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
CRYSTAL
Аннотация: Single crystals of K (x) Rb1 - x Pb2Br5 solid solutions have been grown and investigated using X-ray diffraction and polarized light microscopy in the temperature range 270-640 K. The regions of existence of the tetragonal (I4/mcm) and monoclinic (P2(1)/c) phases have been determined. It has been demonstrated that the partial introduction of rubidium into KPb2Br5 leads to an increase in the temperature of the ferroelastic phase transition (P2(1)/ca dagger"mmm), so that it approaches the melting temperature. In the solid solutions with x a parts per thousand 0.4-0.5, the temperature region of existence of the orthorhombic phase is narrowed to a parts per thousand 1-2 K. It has been revealed that an increase in the potassium content in the material results in a considerable increase in the incorporation coefficient of Er3+ ions.

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Держатели документа:
[Isaenko, L. I.
Merkulov, A. A.
Pashkov, V. M.
Tarasova, A. Yu.] Russian Acad Sci, Trofimuk United Inst Geol Geophys & Mineral, Siberian Branch, Novosibirsk 630090, Russia
[Mel'nikova, S. V.] Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Akad Gorodok, Krasnoyarsk 660036, Russia
ИФ СО РАН
Trofimuk United Institute of Geology, Geophysics, and Mineralogy, Siberian Branch, Russian Academy of Sciences, pr. Koptyuga 3, Novosibirsk 630090, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Isaenko, L. I.; Mel'nikova, S. V.; Мельникова, Светлана Владимировна; Merkulov, A. A.; Pashkov, V. M.; Tarasova, A. Y.; President of the Russian Federation [NSh-1011.2008.2]
}
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18.

Lattice dynamics and raman scattering spectrum of elpasolite Rb2KScF6: Comparative analysis / S. N. Krylova [et al.] // Phys. Solid State. - 2004. - Vol. 46, Is. 7. - P. 1311-1319, DOI 10.1134/1.1778457. - Cited References: 18 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
STRUCTURAL PHASE-TRANSITION
   LIGHT-SCATTERING
   OPTICAL PHONONS
   SOFT-MODE
   CRYSTAL
Аннотация: Raman scattering spectra of elpasolite Rb2KScF6 are studied in a wide temperature range including two phase transitions: from the cubic to the tetragonal phase and then to the monoclinic phase. The experimental Raman scattering spectrum is compared with the lattice vibration spectra of these phases calculated using an ab initio approach. A number of anomalies (caused by structural rearrangement during the phase transitions) are revealed and quantitatively analyzed in the ranges of both the intramolecular vibrations of the octahedron molecular ScF6 ions and low-frequency intermolecular lattice vibrations. The interaction between low-frequency intramolecular vibrations and the intermolecular modes is found to be significant, and strong resonance interaction of the rotational soft modes (which are recovered below the phase transition points) with hard low-frequency vibrations of the rubidium ion sublattice is detected. These interactions are shown to substantially complicate the spectra. (C) 2004 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Univ Maine, F-72085 Le Mans 9, France
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Universite du Maine, Le Mans, Cedex 9, 72085, France

Доп.точки доступа:
Krylova, S. N.; Крылова, Светлана Николаевна; Vtyurin, A. N.; Втюрин, Александр Николаевич; Bulou, A.; Krylov, A. S.; Крылов, Александр Сергеевич; Zamkova, N. G.; Замкова, Наталья Геннадьевна
}
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19.

Low-temperature behavior of the magnetoelastic characteristics of praseodymium ferroborate / G. A. Zvyagina [et al.] // Low Temp. Phys. - 2010. - Vol. 36, Is. 4. - P. 296-302 ; Физика низких температур, DOI 10.1063/1.3420962. - Cited References: 16 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
CRYSTAL
STATE
ND
Аннотация: The behavior of the elastic moduli and sound absorption in a PrFe(3)(BO(3))(4) single crystal at low temperatures is studied. A transition of the magnetic subsystem into an antiferromagnetically ordered state is manifested in the temperature behavior of the sound velocities and absorption. The characteristic behavior of the elastic properties of PrFe(3)(BO(3))(4) in an external magnetic field is observed. A phenomenological theory that gives a qualitative description of the observed features is constructed. It is proposed that a weak magnetic moment exists in the crystal. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3420962]

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Держатели документа:
[Zvyagina, G. A.
Zhekov, K. R.
Bilych, I. V.
Zvyagin, A. A.] Natl Acad Sci Ukraine, BI Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
[Zvyagin, A. A.] Tech Univ Dresden, Inst Solid State Phys, D-01069 Dresden, Germany
[Bezmaternykh, L. N.
Gudim, I. A.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
B. I. Verkin Inst. for Low-Temperature Physics, Engineering, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine
B. I. Verkin Inst. for Low-Temperature Physics, Engineering, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov 61103, Ukraine
Institute for Solid State Physics, Technical University Dresden, Dresden D-01069, Germany
L. V. Kirenskii Inst. of Physics of the Siberian Branch, The Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Zvyagina, G. A.; Zhekov, K. R.; Bilych, I. V.; Zvyagin, A. A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна

}
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20.

Magnetic phase transitions in the double spin-chains compound LiCu2O2 / B. . Roessli [et al.] // Physica B. - 2001. - Vol. 296, Is. 4. - P. 306-311, DOI 10.1016/S0921-4526(00)00574-3. - Cited References: 17 . - ISSN 0921-4526

РУБ Physics, Condensed Matter
Рубрики:
ORDERED MOMENT
   COPPER
   CRYSTAL
   LI2CUO2
Кл.слова (ненормированные):
muon-spin rotation -- spin ladder -- magnetic ordering -- LiCu2O2 -- Crystal structure -- Lithium compounds -- Magnetic anisotropy -- Magnetic field effects -- Magnetic relaxation -- Magnetization -- Order disorder transitions -- Specific heat of solids -- X ray diffraction analysis -- Anisotropic line broadening -- Muon spin rotation -- Spin ladder -- Antiferromagnetic materials
Аннотация: We report high-resolution X-ray diffraction, muon-spin-rotation spectroscopic and specific heat measurements in the double spin-chains compound LiCu2O2. The X-ray diffraction results show that the crystal structure of LiCu2O2 is orthorhombic down to T = 10 K. Anisotropic line-broadening of the diffraction peaks is observed, indicating disorder along the spin chains. Muon-spin relaxation and specific heat measurements show that LiCu2O2 undergoes a phase transition to a magnetic ordered state at T-1 similar to 24 K. The specific heat data exhibits a second lambda -like peak at T-2 similar to 32.5 K, which increases with increasing magnetic field in a similar way to that found in spin-ladder compounds. (C) 2001 Elsevier Science B.V. All rights reserved.

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Держатели документа:
Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
ETH Zurich, CH-5232 Villigen, Switzerland
Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland
Univ Lausanne, Inst Crystallog, CH-1015 Lausanne, Switzerland
RAS, SB, Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Laboratory for Neutron Scattering, Paul Scherrer Inst. and ETH Zurich, CH-5232 Villigen PSI, Switzerland
Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
Lab. for Muon-Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
Institut de Crystallographie, Universite de Lausanne, CH-1015 Lausanne, Switzerland
Institute of Physics SB RAS, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Roessli, B.; Staub, U.; Amato, A.; Herlach, D.; Pattison, P.; Sablina, K. A.; Саблина, Клара Александровна; Petrakovskii, G. A.; Петраковский, Герман Антонович
}
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